Fahrenheit EDT was first released in 1988. There have been several reformulations throughout the years, but since they are hard to pinpoint exactly, they are not separate listings on the site.
(Rumored) formulations:
1988-2002
2002
2005
2007
2011: Confirmed reformulation (via Dior sales representative)
2013: A more vanillic formula
2014: Apparently a good formulation, smelling most like the pre-2011 formula. By Francois Demachy.
For more information about different versions of Fahrenheit EDT up to 2015, check out Raiders Of The Lost Scent.